The photodiodes in the trap-detector package were selected with similar shunt resistances to minimize

voltage gain for the 1/f input voltage noise and drift of the operational amplifier.

Do, "A soft-switching dc/dc converter with high

voltage gain", IEEE Trans.

The VGA

voltage gain was computed for every 4ms speech signal frame and was converted to bias current ratios as expressed in (8).

NCDR CCDR

Voltage gain [V.sub.0]/[V.sub [V.sub.0]/ .sec] = D/2 [V.sub.sec] = 2D/n(1 + n) Output [i.sub.o [i.sub.o current (ripple)] (ripple)] = ripple (1 - 2D) [(1 + n)/ [V.sub.0]/ 2 - 2D] 2L[f.sub.s] [V.sub.0]/2L Diode [MATHEMATICAL [f.sub.s] voltage EXPRESSION [MATHEMATICAL stress NOT EXPRESSION REPRODUCIBLE NOT IN ASCII] REPRODUCIBLE IN ASCII] Peak current [i.sub.sec(peak)] ([V.sub.sec] of [I.sub.0]/2 n[V.sub.0]/ transformer + ([V.sub.sec] [n.sup.2]L) secondary - [V.sub.0] [DT.sub.s] winding /2L)[DT.sub.s] ([n.sub.2]/ [n.sub.1]) [V.sub.0]/L

Cascade of Two Adjustable

Voltage Gains in the Loop

The high gain DC-DC converters under consideration are designed for the same

voltage gain ratio.

The differential-mode

voltage gain and output impedance can be described as:

The second

voltage gain stage is a complementary cascode using bipolar Wilson current mirrors.

Finally we note the

voltage gain stages are powered from regulated power supplies.

Since the power gain specification is referenced to a 500 [ohms] source and a 5000 [ohms] load, the cascade

voltage gain is from -45 to +60 dB.

G(V(t)) = instantaneous input-output envelope

voltage gainwhile the pass-band

voltage gain in the whole frequency range is unity.